How much are Syncro's in PNW? CL has an ad, hmmm.
Seems even if you paid $8K for one and put $5K into it, you're still 1/2 to 1/3 any new vehicle that would meet your requirements. And none of the vehicles you mention, or that have been suggested so far, can do it all - 4x4, carry 4'x8's, sleep non-fetal, room to sit and cook and move around. Plus the depreciation on a nice syncro isn't likely to be much, not like losing 20% when you drive that new car off the lot.
Dunno, since you want 4x4, hauling big stuff, and camping, hard to see how a 4x4 van doesn't fit the bill.
Oh, that's a thought, are there any other 4x4 vans? Wanna spring for a Sprinter and have a 4x4 drivetrain installed?
The other possibility would be a 4x4 pickup with a short collapsing camper like an Alaskan.
http://www.alaskancamper.com/akcmpr.htm Champ on the "off-road" part. But unless you have a place to leave the slide-out camper, no good for hauling. Pickup campers are a pain, I had one on my F250, very little space inside and MPG will be awful. I think I got 8MPG fully loaded.